package org.apache.commons.graph.utils

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
 * Simple utility class.
 * It is used for executing multi-thread test case.
 */
class MultiThreadedTestRunner(runnables: Array<TestRunner>) {
    private val th: MutableList<Thread> = ArrayList()
    var maxWait: Long = 60L * 60L * 1000
    private val exceptions: MutableList<Throwable> = ArrayList()


    init {
        for (i in runnables.indices) {
            runnables[i].setTestRunner(this)
            th.add(Thread(runnables[i]))
        }
    }

    /**
     * @param e
     */
    fun addException(e: Throwable) {
        exceptions.add(e)
    }

    @Throws(Throwable::class)
    fun runRunnables() {
        for (t in th) {
            t.start()
        }

        for (t in th) {
            t.join(maxWait)
        }

        if (exceptions.size > 0) {
            throw exceptions[0]
        }
    }
}
